Publications by authors named "NISHIMURA S"

: Developing high-performance artificial intelligence (AI) models for rare diseases is challenging owing to limited data availability. This study aimed to evaluate whether a novel three-class annotation method for preparing training data could enhance AI model performance in detecting osteosarcoma on plain radiographs compared to conventional single-class annotation. : We developed two annotation methods for the same dataset of 468 osteosarcoma X-rays and 378 normal radiographs: a conventional single-class annotation (1C model) and a novel three-class annotation method (3C model) that separately labeled intramedullary, cortical, and extramedullary tumor components.

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Purpose: The factors that contribute to the progression of macular involvement in RRD have not been extensively investigated. The purpose of this study is to evaluate the association between the preoperative characteristics and macular status of the eyes with rhegmatogenous retinal detachment (RRD).

Methods: This is a retrospective cohort study.

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The two-dimensional interlayer space of layered materials has been highlighted due to their adsorption property, whose nanostructure in the water-immersed state is scarcely understood by experiment. Recent developments in molecular simulation have enabled researchers to investigate the interlayer structure, but water content is necessary for accurate modeling. In the present study, we proposed a theoretical method to estimate the saturated water content and adsorption selectivity of trichlorophenol and phenol in montmorillonite modified with hexadecyltrimethylammonium ions.

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  • The study evaluates the safety and feasibility of gastrectomy in patients aged 85 and older with gastric cancer.
  • It analyzed data from over 10,000 patients who underwent distal or total gastrectomy to identify risks for serious postoperative complications.
  • Key risk factors included physical health indicators like body mass index, daily living activities, and past medical history, highlighting the need for careful assessment beyond just tumor characteristics.
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Cerebral cortex development in humans is a highly complex and orchestrated process that is under tight genetic regulation. Rare mutations that alter gene expression or function can disrupt the structure of the cerebral cortex, resulting in a range of neurological conditions. Lissencephaly ('smooth brain') spectrum disorders comprise a group of rare, genetically heterogeneous congenital brain malformations commonly associated with epilepsy and intellectual disability.

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Although partial nephrectomy (PN) is preferred over radical nephrectomy (RN) for preserving renal function in patients with cT1 renal cancer, its impact on cardiovascular events (CVe) remains controversial. This study aimed to compare PN and RN in regard to the occurrence of CVe, including cerebrovascular events and exacerbation of hypertension (HT). We retrospectively analyzed 418 consecutive patients who underwent PN or RN for cT1 renal cancer.

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Targeting nonapoptotic cell death offers a promising strategy for overcoming apoptosis resistance in cancer. In this study, we developed Tat-Ram13, a 25-mer peptide that fuses the NOTCH1 intracellular domain fragment RAM13 with a cell-penetrating HIV-1 TAT, for the treatment of T-cell acute lymphoblastic leukemia with aberrant NOTCH1 mutation. Tat-Ram13 significantly downregulated NOTCH1-target genes in T-ALL cell lines.

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Objective: To examine whether antimicrobial prophylaxis based on screening rectal cultures using selective media prevented acute bacterial prostatitis following transrectal prostate biopsy (TRPB).

Methods: In this multicenter, randomized controlled trial, we enrolled 403 patients undergoing TRPB with low risks of infectious complications. Patients were randomized into a cultured group (CG) or no cultured group (NCG).

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  • A study analyzed 1,625 stool samples from children with diarrhea in Japan over four years (2018-2022) to detect human astroviruses (HAstVs) and other diarrheal viruses, finding HAstV in 8.6% of samples.
  • The prevalence of HAstVs varied by year, with a notable increase to 20.1% in 2021-2022, and a significant infection rate was observed in children aged 1-3 years.
  • The study identified multiple HAstV genotypes, including outbreaks of HAstV1 and MLB2 during the COVID-19 pandemic, and noted for the first time a mixed infection of HAstV1 and MLB1.
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The multifunctional cytokine TGF-b is produced in a latent form (L-TGF-b) where a RGD containing homodimeric prodomain forms a "ring" encircling mature TGF-b, shielding it from its receptors. Thus L-TGF-b must be activated to function, a process driven by dynamic allostery resulting from integrin binding the L-TGF-b RGD motif. Here we provide critical evidence that defines a domain-swapped architecture of L-TGF-b, an essential component in the dynamic allostery mechanism of L-TGF-b activation.

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  • Assisted reproductive technologies (ART) often struggle with low success rates, and East Asian traditional medicine (EATM), particularly acupuncture and herbal remedies, might improve outcomes for women undergoing ART.
  • This study aims to assess the effectiveness and safety of EATM in boosting clinical pregnancy and live birth rates among women facing infertility during ART cycles.
  • Involving 10,776 women from 37 randomized trials across various countries, the research utilizes systematic data extraction and statistical analysis to evaluate the impact of acupuncture and herbal treatments on ART success.
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Given that the hydration water of polymer matrices may differ from that of outermost polymer surfaces, processes at biomaterial-biofluid interfaces and role of hydration water therein cannot be adequately examined using most conventional characterization methods. To bridge this gap, a gold substrate was herein modified with linear and cyclic poly(2-methoxyethyl acrylate) to prepare -PMEA and -PMEA surfaces, respectively, as models for the outermost surfaces of blood-contacting medical devices. Both surfaces suppressed the adhesion of human platelets but differed in the adhesion behaviors of normal and tumor cells despite having the same areal density of fixed-end units.

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Purpose: Recent advancements in information technology and wearable devices have revolutionized healthcare through health data analysis. Identifying significant relationships in complex health data enhances healthcare and public health strategies. In health analytics, causal graphs are important for investigating the relationships among health features.

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Background: We conduct a retrospective analysis of patients with pathological fractures resulting from upper extremity malignancies, focusing on the evaluation of treatment strategies employed.

Materials And Methods: We retrospectively studied 10 patients with metastatic bone tumors of the upper extremities. The study variables included tumor site, primary pathology, duration from the first diagnosis of the primary lesion to the occurrence of the pathological fracture, use of bone-modifying drugs, surgical technique, adjuvant therapy, postoperative functional assessment, Katagiri's score, American Society of Anesthesiologists physical status (ASA-PS), outcome, and correlations between the Eastern Cooperative Oncology Group Performance Status (ECOG-PS) and Musculoskeletal Tumor Society (MSTS) score.

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Background: Gastro-tracheal fistula is a rare but serious complication after esophageal surgery, often requiring long-term treatment and invasive procedures. Gastro-tracheal fistula usually occurs through the posterior mediastinal route and rarely through the retrosternal route. No previous reports have described gastro-tracheal fistula after retrosternal route reconstruction was cured by conservative treatment.

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  • A study was conducted to examine how Attention-Deficit/Hyperactivity Disorder (ADHD) impacts recovery time from concussions in high school athletes, considering factors like sex and age.
  • Results showed that athletes with ADHD took significantly longer to return to learning (12.86 days) and sport (20.82 days) compared to those without ADHD (1.43 days for RTL and 18.03 days for RTS).
  • It was concluded that healthcare providers should recognize the increased risk of prolonged recovery for high school athletes with ADHD, especially among females and younger individuals.
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Objectives: The advancement of laparoscopic surgery has allowed surgeons to see finer anatomical structures during surgery. As a result, several issues have arisen regarding Gerota fascia that cannot be explained by previous interpretations, such as its various forms observed during surgery. To address these issues, we histologically examined the structure of Gerota fascia.

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Purpose: This study aimed to assess the diagnostic performance of dynamic chest radiography (DCR) and investigate its added value to chest radiography (CR) in detecting pulmonary embolism (PE).

Methods: Of 775 patients who underwent CR and DCR in our hospital between June 2020 and August 2022, individuals who also underwent contrast-enhanced CT (CECT) of the chest within 72 h were included in this study. PE or non-PE diagnosis was confirmed by CECT and the subsequent clinical course.

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Hepatocellular carcinoma (HCC) emerges from chronic inflammation, to which activation of hepatic stellate cells (HSCs) contributes by shaping a pro-tumorigenic microenvironment. Key to this process is p62, whose inactivation leads to enhanced hepatocarcinogenesis. Here, we show that p62 activates the interferon (IFN) cascade by promoting STING ubiquitination by tripartite motif protein 32 (TRIM32) in HSCs.

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  • Endogenous endophthalmitis is an eye infection linked to bloodstream infection, and its treatment with intravitreal fluconazole in older adults with liver and kidney disease is not well understood.* -
  • This case report features a 78-year-old man with liver cirrhosis and end-stage kidney disease who developed blurred vision due to a severe eye infection that was preceded by an obstructive urinary tract infection.* -
  • The patient received intravitreal fluconazole injections along with oral fluconazole; after treatment, his eye symptoms improved significantly, indicating that this method can effectively treat fungal endophthalmitis in patients who cannot undergo more invasive procedures.*
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  • The study analyzed the effectiveness of whole genome sequencing (WGS) compared to whole exome sequencing (WES) in identifying driver alterations in cancer genomes, given that WES missed these changes in 27.8% of cases.
  • Researchers focused on 177 cancer samples previously classified as "driverless" by WES, finding that WGS successfully identified driver and likely driver alterations in 68.4% and 22.6% of those samples, respectively.
  • The most common genomic changes detected by WGS included oncogene amplification and tumor suppressor gene deletions, highlighting the significance of WGS in uncovering genetic alterations linked to tumor development.
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  • - This study compared the clinical outcomes of robot-assisted partial nephrectomy (RAPN) and image-guided percutaneous cryoablation (IG-PCA) in patients with clinical T1 renal cell carcinoma over a period from 2012 to 2021, analyzing data from 679 patients.
  • - After matching for baseline characteristics, 108 patients from each treatment group showed that while RAPN had no local recurrences, IG-PCA had three cases of tumor progression, which were successfully treated with additional thermal ablations.
  • - Overall, both treatments had similar long-term survival rates, complication rates, and renal function preservation, indicating that IG-PCA can provide oncological outcomes that are comparable to RAPN.
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  • Photocyclisation reactions provide a useful method for creating complex polycyclic structures, especially in natural product synthesis, with the [4 + 2] reaction being less explored than its [2 + 2] counterpart.
  • This study introduced the rapid assembly of a -type scaffold using an intramolecular Diels-Alder reaction on a dehydrosecodine-type intermediate, achieving up to 77% yield under mild conditions via a micro-flow system.
  • The research highlights the direct UV-LED activation of the DHP moiety, allowing for efficient [4 + 2] and [2 + 2] cyclisations without needing external photocatalysts, thus showcasing a novel approach to exploiting the reactivity of polyuns
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  • TGF-β is a crucial protein involved in development and immunity, usually expressed in a latent form associated with its prodomain and presented on immune cells via GARP.
  • Recent findings indicate that TGF-β can signal without needing to fully dissociate from its latent form, challenging existing beliefs.
  • New research using advanced microscopy shows that the binding of integrin αvβ8 can alter the structure of latent TGF-β, allowing it to activate signaling pathways without being released, and this mechanism may apply to other similar receptor/ligand systems.
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